"Window Under Cursor" doesn't work in KSnapshot version 0.8.2 (Debian package version 4.6.5-3 currently in Sid and Testing), with Desktop Effects enabled. Trying to take a screenshot with that setting takes no picture at all, just shows the last screenshot taken with another setting. The other capture modes work fine. I've been using "Section of Window" to take a screenshot of a single window. I've seen bug reports of this from as early as last April. When I turn off Desktop Effects, it works fine.

Hmmmm -- can't reproduce the problem here. I would suspect something about GLX or compositing, relative to particular hardware. If you can read the infobash output in this screenshot, you can see it is Nvidia with proprietary driver:

alexk

Post subject:Posted: 05.12.2011, 18:41

Joined: 2010-10-01
Posts: 194

Status: Offline

Maybe this is specific to Intel graphics? I found a better workaround, which is disabling the "Screenshot" desktop effect, while leaving other desktop effects enabled. I have never used the "Screenshot" desktop effect and am not sure how to activate it. Anybody ever use it?

Yep, the problem exists on my netbook with Intel Mobile 945GME. It captures the entire screen, even when set to "Window under cursor". I can also confirm that turning off the screenshot effect in Desktop Effects fixes it.